<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>盒子阴影</title>
		<style>
			.box{
				width: 300px;
				height: 300px;
				background: #333333;
				margin:0px auto;
			}
			.box:hover{
				box-shadow: 3px 3px 3px 0px red,
				-3px -3px 9px 0px green;	
				transition: .5s;
			}
			
		</style>
	</head>
	<body>
		<div class="box">
			<a href="1bdqn.html">下一页</a>
		</div>
	</body>
</html>

			